(Λευκός Οίκος, The Sofia Echo, SNA, Dnevnik, Mediapool, Βουλγαρική Κυβέρνηση - 18/06/08, AFP, DPA, Υπουργείο Εσωτερικής Ασφάλειας ΗΠΑ, The Sofia Echo, SNA, Dnevnik, Mediapool - 17/06/08)
(Casa Albă, The Sofia Echo, SNA, Dnevnik, Mediapool, Guvernul Bulgariei - 18/06/08; AFP, DPA, Departamentul SUA de Securitate Naţională, The Sofia Echo, SNA, Dnevnik, Mediapool - 17/06/08)